Holding seal for crankcase gaskets



May 26, 1953 c; N. 'BERGSTROM 2,639,832

' HOLDING SEAL FOR CRANKCASE GASKETS Filed June 11, 1949 OVA/EN 7-0; CARL Nzmvaesmom p'TTU/F N Patented May 26, 1953 "if iUNlTED STATES PATENT FFICEJ I .1 -iz'msaf" f' HOLDING SEAL FOR oRANKcAsE GASK TS I Carl N. Bergstrom, Portland, Oreg. V

iApplication June 11, 1949,-Serial No. 98,495

This invention relates generally to the automotive industry and particularly to a holding seal for crankcase gaskets.

The main object of this invention is to provide a means for facilitating the application of a crankcase and gasket to a motor base.

The second object is to insure the alignment of the holes in the crankcase and gasket and to protect the gasket around the bolt holes.

The third object is to insure a more perfect seal around the bolts, and to render unnecessary the use of lock washers.

The fourth object is to utilize the aligning means as a screw retainer to hold the screws in position for the application of a speed wrench or a power driver.

These and other objects are accomplished in the manner set forth in the following specification as illustrated in the accompanying drawing, in which:

Fig. 1 is a fragmentary perspective view showing portions of the motor base, gasket and crankcase.

Fig. 2 is a fragmentary section showing the relation of the parts as the crankcase and gasket are being put into place.

Fig. 3 is a view similar to Fig. 2, but showing the crankcase in position against the motor base with the bolt partially set.

Fig. 4 is a perspective of the ferrule with parts broken away in section.

Like numbers of reference refer to the same or similar parts throughout the several views.

Referring in detail to the drawing, there is shown the lower portion In of a motor base to which is to be attached a crankcase l I by means of its flange [2.

Around the flange [2 are disposed a plurality of screws l3 which pass through holes I4 in the flange I2 and through holes I5 in the cork or composition gasket l6, all of which are in common use.

There is always provided around the screws 13 a considerable amount of clearance space as the parts are interchangeable and a workman, having but two hands, has them very full when putting a crankcase and its gasket in position.

Shellac or other sticky seal is often used on both sides of the gasket and this tends to hold the gasket in place on the crankcase flange l2.

However, once the gasket touches the base [0, there is apt to be a shifting of the gasket l6 on the flange l2.

My device consists of a ferrule ll of plastic materials, such as the phenol derivatives, or lead,

or other soft or ductile material.

' The ferrule i! has formed on 2 Claims. ((31. 218-29) one end a flange [8 provided with annular rings 19 which stre then the flange and improve its holding and sealing action.

The ferrule I! has formed in the side thereof, 7

a bead 20 which may be continuous or merely broken or even single points or projections at two or more places around the ferrule H. The end 2| is preferably flared to a thin edge to facilitate the insertion of the screw point 22.

In the use of this device, it is only required to mount the gasket IS on the flange l2 and then drop a ferrule 11 into each pair of holes l4 and I5 until the flange I8 rests upon the gasket 16. Screws Il-A are now pushed into the ferrule ends 2| and held by means of the beads 20.

No difficulty will be encountered in starting the screws l'l-A and then sending them home by means of a speed wrench or power driver.

The ferrule is flowed by the tightening action to the form shown in Fig. 3 in which the clearance is exaggerated. In practice the ferrule ll fills up the clearance space 23 and flows around the threads of the screws I'l-A.

Should the crankcase be removed, the gasket is more apt to come away intact with the crank case as it is held against it by the various ferrules.

I claim:

1. A ferrule for use in temporarily retaining a fastening member by its shank portion while fastening machine parts together by insertion and fixedly securing a fastening member in aligned openings in said machine parts, said ferrule comprising a cylindrical portion of deformable plastic resin having a bore which is tapered outwardly toward one end to provide an entering portion for the shank portion of the fastening member, the other end having an outwardly extending flange, a shank-engaging annular bead extending radially on the inner side of said ferrule bore for frictional engagement with the shank portion of the fastening member whereby the fastening member is temporarily retained by said ferrule upon insertion of fastening member thereinto.

2. In combination; a first member of predetermined thickness adapted for being secured to a second member, a screw extending through said first member for threaded engagement with said second member, and a cylindrical ferrule of deformable plastic material mounted on the screw and tapering to a thin edge toward the head end of the screw and having a radial flange at its opposite end, said flange being disposed between said members with the cylindrical portion extending through said flrst member, and the 3 length of the cylindrical portion of the ferrule being greater than the thickness of said first member, whereby when the screw is drawn up tight the cylindrical portion of said ferrule is deformed to form a seal about said screw, the cylindrical portion of the ferrule being provided with a thread engaging projection extending radially inwardly -thereof whereby the screw is supported by "the ferrule.

CARL N. BERGSTROM.

References Cited in the file of this patent UNITED STATES s Number Name Date 233,579 Varlot 4 Qot. 1-9, 1680 813,575 Nichols Feb. 27, 1906 1,083,350 Davis Jan. '6, 19154 1,356,404 Robinson Oct. 19, 1920 4 I Number Name Date 1,862,320 Ruef June 7, 1932 1,873,894 Kimbell Aug. 23, 1932 1,959,607 Anderson May 22, 1934 2,030,088 Young Feb. 11, 1936 2,092,358 Robertson Sept. '7, 1937 2,159,346 Welch May 23, 1939 2,3 z4,1g2 Ek-lund Loui 43, 1943 2,373,092 Miller ii my 31-5, 1945 2,425,209 Snyder et a1 Aug. 5, 1947 3,491,085 Burrows Dec. 13, 1949 FOREIGN PATENTS Number Country Date 126,301 Germany Nov. 15, 1900 REFERENCES A Ensues for Present and Post-war Productspublished by Product Engineering-September, 1943, 

